In science fiction, spaceships moving at or beyond lightspeed enable all manner of universal exploration. But in Earth-bound reality, traveling at the speed of light (299,792,458 meters per second, or ...

Could humans ever reach the stars? Explore the harsh realities of near-light-speed travel, time dilation, lethal cosmic ...

Cosmic speed limits can be a major inconvenience but they've rarely stopped science fiction in its tracks. When it comes to space travel, Albert Einstein's theory of relativity is a major ...

THE USS Enterprise they are not. One looks like a magic-marker pen, except that it is 58km long. The second, a pair of conjoined Ferris wheels. And the third, a giant jellyfish. They are, nevertheless ...